Sediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts

Nearshore nourishments are constructed for shoreline protection from waves, to provide sediment nourishment to the beach profile, and to beneficially use dredged sediment from navigation channel maintenance. However, it is poorly understood how placement morphology and depth influence nearshore proc...

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Autores principales:	Cody L. Johnson, Brian C. McFall, Douglas R. Krafft, Mitchell E. Brown
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	nearshore nourishment wave dissipation nearshore sediment transport coastal hydrodynamic modeling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/0b69a4dea765426092571933dd2485c1
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spelling	oai:doaj.org-article:0b69a4dea765426092571933dd2485c12021-11-25T18:03:58ZSediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts10.3390/jmse91111822077-1312https://doaj.org/article/0b69a4dea765426092571933dd2485c12021-10-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1182https://doaj.org/toc/2077-1312Nearshore nourishments are constructed for shoreline protection from waves, to provide sediment nourishment to the beach profile, and to beneficially use dredged sediment from navigation channel maintenance. However, it is poorly understood how placement morphology and depth influence nearshore processes operated on wave-dominated coasts. This study investigates the wave fields, sediment transport, and morphological response to three common nearshore nourishment shapes, nearshore berm (elongated bar), undulated nearshore berm, and small discrete mounds, with numerical experiments utilizing the Coastal Modeling System. The nourishments are placed in depths between 3 m and 7 m with a volume of approximately 100,000 m<sup>3</sup> and between 400 m and 1000 m in alongshore length. Numerical experiments are carried out in three distinct coastal settings with representative wave climates and geomorphology. Simulation results indicate that shallower, more continuous berms attenuate the most wave energy, while deeper, more diffuse placements retain more sediment. Results from this study improve the understanding of nearshore nourishment shapes and can support decision makers identifying the most appropriate construction technique for future nearshore nourishment projects.Cody L. JohnsonBrian C. McFallDouglas R. KrafftMitchell E. BrownMDPI AGarticlenearshore nourishmentwave dissipationnearshore sediment transportcoastal hydrodynamic modelingNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1182, p 1182 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	nearshore nourishment wave dissipation nearshore sediment transport coastal hydrodynamic modeling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
spellingShingle	nearshore nourishment wave dissipation nearshore sediment transport coastal hydrodynamic modeling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Cody L. Johnson Brian C. McFall Douglas R. Krafft Mitchell E. Brown Sediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts
description	Nearshore nourishments are constructed for shoreline protection from waves, to provide sediment nourishment to the beach profile, and to beneficially use dredged sediment from navigation channel maintenance. However, it is poorly understood how placement morphology and depth influence nearshore processes operated on wave-dominated coasts. This study investigates the wave fields, sediment transport, and morphological response to three common nearshore nourishment shapes, nearshore berm (elongated bar), undulated nearshore berm, and small discrete mounds, with numerical experiments utilizing the Coastal Modeling System. The nourishments are placed in depths between 3 m and 7 m with a volume of approximately 100,000 m<sup>3</sup> and between 400 m and 1000 m in alongshore length. Numerical experiments are carried out in three distinct coastal settings with representative wave climates and geomorphology. Simulation results indicate that shallower, more continuous berms attenuate the most wave energy, while deeper, more diffuse placements retain more sediment. Results from this study improve the understanding of nearshore nourishment shapes and can support decision makers identifying the most appropriate construction technique for future nearshore nourishment projects.
format	article
author	Cody L. Johnson Brian C. McFall Douglas R. Krafft Mitchell E. Brown
author_facet	Cody L. Johnson Brian C. McFall Douglas R. Krafft Mitchell E. Brown
author_sort	Cody L. Johnson
title	Sediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts
title_short	Sediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts
title_full	Sediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts
title_fullStr	Sediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts
title_full_unstemmed	Sediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts
title_sort	sediment transport and morphological response to nearshore nourishment projects on wave-dominated coasts
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0b69a4dea765426092571933dd2485c1
work_keys_str_mv	AT codyljohnson sedimenttransportandmorphologicalresponsetonearshorenourishmentprojectsonwavedominatedcoasts AT briancmcfall sedimenttransportandmorphologicalresponsetonearshorenourishmentprojectsonwavedominatedcoasts AT douglasrkrafft sedimenttransportandmorphologicalresponsetonearshorenourishmentprojectsonwavedominatedcoasts AT mitchellebrown sedimenttransportandmorphologicalresponsetonearshorenourishmentprojectsonwavedominatedcoasts
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Sediment Transport and Morphological Response to Nearshore Nourishment Projects on Wave-Dominated Coasts

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